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Pre-Knowledge Quiz: Elements and Compounds

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What is the smallest building block of all matter?

a)

a molecule

b)

an atom

c)

a cell

d)

a mixture

2.

Which of the following is a pure substance?

a)

saltwater

b)

air

c)

sugar

d)

soil

3.

When you mix sand and water, what do you get?

a)

a solution

b)

a compound

c)

a mixture

d)

an element

4.

The symbol for the element 'oxygen' is:

a)

Ox

b)

O

c)

Oy

d)

H₂O

5.

Which of these is an example of a chemical change?

a)

melting ice

b)

dissolving sugar in water

c)

tearing a piece of paper

d)

burning wood

6.

A substance that is made of only one type of atom is called a(n):

a)

compound

b)

mixture

c)

element

d)

solution

7.

Water (H2O) is an example of a:

a)

mixture

b)

element

c)

solution

d)

compound

8.

Which of these is a physical property of matter?

a)

flammability

b)

density

c)

reactivity with acid

d)

ability to rust

9.

When salt is dissolved in water, the salt is called the:

a)

solvent

b)

solute

c)

solution

d)

compound

10.

Air is an example of a:

a)

compound

b)

pure substance

c)

mixture

d)

element

11.

The process of separating a solid from a liquid using a filter is called:

a)

distillation

b)

evaporation

c)

filtration

d)

decanting

12.

All matter is made up of tiny particles called:

a)

cells

b)

atoms and molecules

c)

dust

d)

grains

13.

Which of these is a metal?

a)

sulfur

b)

oxygen

c)

carbon

d)

iron

14.

A solution is a special type of:

a)

element

b)

compound

c)

homogeneous mixture

d)

heterogeneous mixture

15.

What do we call a substance that can be broken down into simpler substances by chemical means?

a)

an element

b)

a compound

c)

a mixture

d)

a solution

16.

The symbol for the element 'carbon' is:

a)

Ca

b)

Co

c)

C

d)

Cr

17.

When two or more substances are combined but NOT chemically bonded, you have a:

a)

compound

b)

molecule

c)

mixture

d)

reaction

18.

Which of the following is a liquid at room temperature?

a)

gold

b)

carbon

c)

water

d)

salt

19.

What is a common example of a physical change?

a)

baking a cake

b)

a firecracker exploding

c)

a log rotting

d)

boiling water

20.

The particles in a solid are typically:

a)

far apart and moving randomly

b)

close together and vibrating in place

c)

spread out and sliding past each other

d)

able to move freely throughout the container